<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="i1">
    嘿嘿嘿
    <a>百度</a>
</div>
<input id="i2" type="text">
<select id="i3">
    <option value="11">北京</option>
    <option value="12">上海</option>
    <option value="13">广州</option>
</select>
</body>
</html>